Question: Let Y be a random variable with E[Y ] and 2 var[Y ]. Define Let (b,b 2) be the values such that

Let Y be a random variable with ¹ Æ E[Y ] and ¾2 Æ var[Y ]. Define y- 8(0)=((1-0-0)

Let (b¹,b¾
2) be the values such that g n(b¹,b¾
2) Æ 0 where g n(m, s) Æ n¡1Pni Æ1 g ¡
yi ,m, s ¢
. Show that b¹ andb¾
2 are the sample mean and variance.

y- 8(0)=((1-0-0)

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